Illegal reflectice access operation

[Tschigger]

I get the following error message when I start my application:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by io.timeandspace.smoothie.ObjectSize (file:/home/user/.gradle/caches/modules-2/files-2.1/io.timeandspace/smoothie-map/2.0.2/e51889ef2e0a69f95e4203afc68c01a8b75a1380/smoothie-map-2.0.2.jar) to field java.util.HashMap.table
WARNING: Please consider reporting this to the maintainers of io.timeandspace.smoothie.ObjectSize
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

I am using Java HotSpot(TM) 64-Bit Server VM, 14.0.1+7.

Application behaves correctly, but unfortunately this kind of error is not suppressible. Any way you could get rid of this?